head to head
vs
Puyo Puyo! 15th AnniversaryvsTetris 99
Puyo Puyo! 15th Anniversary leans Execution (Practiced Mastery); Tetris 99 leans Execution (Pure Mechanics).
Puyo Puyo! 15th AnniversaryTetris 99
Axis by axis
Execution7 vs 9
Tetris 99 leans harder on execution: High-speed stacking and finesse define survival
Reads4 vs 4
Even - both lean on reads about the same.
Variance4 vs 4
Even - both lean on variance about the same.
Optimization7 vs 5
Puyo Puyo! 15th Anniversary leans harder on optimization: Building large chains is a learnable scoring system
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.